Since jnr-ffi version 2.1.7 this warning is fixed. I verified compatibility by managing jnr-ffi to 2.1.8. Therefore I'd suggest to update the dependency.
Update: int readdir(String path, Pointer buf, FuseFillDir filter, @off_t long offset, FuseFileInfo fi) doesn't get called any longer, when I update jnr-ffi to 2.1.8 (but it does work with 2.1.7). So apparently you can not just bump the version without adjusting the code.
Since jnr-ffi version 2.1.7 this warning is fixed.
I verified compatibility by managing jnr-ffi to 2.1.8.Therefore I'd suggest to update the dependency.Update:
int readdir(String path, Pointer buf, FuseFillDir filter, @off_t long offset, FuseFileInfo fi)
doesn't get called any longer, when I update jnr-ffi to 2.1.8 (but it does work with 2.1.7). So apparently you can not just bump the version without adjusting the code.